So here's some thoughts about evolution. It's thought of as a process that takes really long and that happens incrementally, continuously over long times, but it'd seem that there'd have to be parent <-> offspring instances in evolutionary chains across generations that'd have to be qualitatively different in a way from normal evolutionary minor changes in how much or minor traits and features are expressed in the bodies of individuals of a given animal population.
On 1 side, if it's e.g. about the length or shape, size, thickness, sharpness, or position of a given body part, say a toe, or bones, from generation to generation, I can see how that may change slightly, in a way that could be arbitrarily continuous or close to each other between parent and off-spring generation.
Though on the other side, if it's about the count of teeth, finger, tooth, the presence or sudden absence at all of new organs, or a new arrangement of body parts that previously was different, then I think such kinds of changes in the evolutionary process could logically be characterized as an own separate kind of change, probably either to be traced back to a certain gene combination from the parents to their offspring, or if the special circumstances weren't "possessed"/inherent in the genes, then alternatively, a sufficiently (e.g. chemically) different environment in which the parent generation and/or its off-spring (before hatching or birthing) may be a candidate for such physiological "quantum leap (as it'd be a small, non-continuous but discrete step of change)"
